METHOD AND APPARATUS FOR USE IN A COMMUNICATIONS NETWORK

摘要

A method is provided for use by a first node (10) in a subscribe/ notify procedure of a telecommunications network. The method comprises sending (S1) a bulk subscription message (SIP SUBSCRIBE) indicating that the first node (10) wishes to subscribe to event update notifications relating to at least one type of event for plurality of remote nodes (50) of the network. In response to receipt of the subscription message at a second node (20) of the network, the second node (20) is caused to send (S4) future event update notifications (SIP NOTIFY) to the first node (10) if they relate to the at least one type of event. In the implementation shown in the abstract figure, event update notifications are only sent (S4) for those remotes nodes (50) having a predetermined association with the first node (10). A corresponding method is also providedfor use by the second node (20). The event may relate to a remote note sending a SIP REGISTER message to an S-CSCF node in an IMS.